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nvme: make nvme_ctrlr_identify() can be executed asynchronously

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Change-Id: I6756d259eb0a7d39068a2482d00abf9042488d13
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/424777
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Changpeng Liu 2018-09-06 22:01:29 -04:00 committed by Jim Harris
parent b96f97cf29
commit a61aff774c
2 changed files with 24 additions and 12 deletions
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31
lib/nvme/nvme_ctrlr.c
View File

@ -620,6 +620,8 @@ nvme_ctrlr_state_string(enum nvme_ctrlr_state state)
return "enable admin queue";
case NVME_CTRLR_STATE_IDENTIFY:
return "identify controller";
case NVME_CTRLR_STATE_WAIT_FOR_IDENTIFY:
return "wait for identify controller";
case NVME_CTRLR_STATE_SET_NUM_QPAIRS:
return "set number of queues";
case NVME_CTRLR_STATE_CONSTRUCT_NS:
@ -797,6 +799,12 @@ nvme_ctrlr_identify_done(void *arg, const struct spdk_nvme_cpl *cpl)
{
struct spdk_nvme_ctrlr *ctrlr = (struct spdk_nvme_ctrlr *)arg;
if (spdk_nvme_cpl_is_error(cpl)) {
SPDK_ERRLOG("nvme_identify_controller failed!\n");
nvme_ctrlr_set_state(ctrlr, NVME_CTRLR_STATE_ERROR, NVME_TIMEOUT_INFINITE);
return;
}
/*
* Use MDTS to ensure our default max_xfer_size doesn't exceed what the
* controller supports.
@ -830,32 +838,28 @@ nvme_ctrlr_identify_done(void *arg, const struct spdk_nvme_cpl *cpl)
ctrlr->flags |= SPDK_NVME_CTRLR_SGL_SUPPORTED;
ctrlr->max_sges = nvme_transport_ctrlr_get_max_sges(ctrlr);
}
nvme_ctrlr_set_state(ctrlr, NVME_CTRLR_STATE_SET_NUM_QPAIRS, NVME_TIMEOUT_INFINITE);
}
static int
nvme_ctrlr_identify(struct spdk_nvme_ctrlr *ctrlr)
{
struct nvme_completion_poll_status status;
int rc;
int rc;
nvme_ctrlr_set_state(ctrlr, NVME_CTRLR_STATE_WAIT_FOR_IDENTIFY, NVME_TIMEOUT_INFINITE);
rc = nvme_ctrlr_cmd_identify(ctrlr, SPDK_NVME_IDENTIFY_CTRLR, 0, 0,
&ctrlr->cdata, sizeof(ctrlr->cdata),
nvme_completion_poll_cb, &status);
nvme_ctrlr_identify_done, ctrlr);
if (rc != 0) {
nvme_ctrlr_set_state(ctrlr, NVME_CTRLR_STATE_ERROR, NVME_TIMEOUT_INFINITE);
return rc;
}
if (spdk_nvme_wait_for_completion(ctrlr->adminq, &status)) {
SPDK_ERRLOG("nvme_identify_controller failed!\n");
return -ENXIO;
}
nvme_ctrlr_identify_done(ctrlr, &status.cpl);
return 0;
}
int
nvme_ctrlr_identify_active_ns(struct spdk_nvme_ctrlr *ctrlr)
{
@ -1727,7 +1731,10 @@ nvme_ctrlr_process_init(struct spdk_nvme_ctrlr *ctrlr)
case NVME_CTRLR_STATE_IDENTIFY:
rc = nvme_ctrlr_identify(ctrlr);
nvme_ctrlr_set_state(ctrlr, NVME_CTRLR_STATE_SET_NUM_QPAIRS, NVME_TIMEOUT_INFINITE);
break;
case NVME_CTRLR_STATE_WAIT_FOR_IDENTIFY:
spdk_nvme_qpair_process_completions(ctrlr->adminq, 0);
break;
case NVME_CTRLR_STATE_SET_NUM_QPAIRS:

5
lib/nvme/nvme_internal.h
View File

@ -422,6 +422,11 @@ enum nvme_ctrlr_state {
*/
NVME_CTRLR_STATE_IDENTIFY,
/**
* Waiting for Identify Controller command be completed.
*/
NVME_CTRLR_STATE_WAIT_FOR_IDENTIFY,
/**
* Setup Number of Queues of the controller.
*/